CompTIA Security+ (SY0-601) — Question 556

Which of the following security controls is used to isolate a section of the network and its externally available resources from the internal corporate network in order to reduce the number of possible attacks?

Answer options

• A. Faraday cages
• B. Air gap
• C. Vaulting
• D. Proximity readers

Correct answer: B

Explanation

The correct answer is B, Air gap, as it effectively isolates a network segment from external threats by ensuring there is no direct connection. Other options like Faraday cages are used for shielding against electromagnetic interference, Vaulting pertains to secure storage, and Proximity readers are for access control, none of which serve the purpose of network isolation.